CVE-2021-21822

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
n/a	Foxit	Foxit Reader 10.1.3.37598

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1287Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1287Exploit, Third Party Advisory

Timeline

Published: May 10, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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